Associate the Scheduler with a DLCI on a Channelized IQ Interface

For channelized OC-12 IQ, channelized DS-3 IQ, channelized STM-1 IQ, and channelized E1 IQ interfaces with Frame Relay encapsulation, you can associate a scheduler map name with a logical interface. To activate transmission scheduling on a DLCI, include the per-unit-scheduler statement at the [edit interfaces interface-name] hierarchy level.

[edit]

interfaces {

    interface-name {

        per-unit-scheduler;

    }

}

For channelized IQ interfaces, the number of schedulers you can apply varies by channel level. Table 4 shows the number of schedulers you can apply at each channel level.

Table 4: Scheduler Limitations for Channelized IQ Interfaces

Channelized IQ Interfaces	Number of Schedulable DLCIs per level
Channelized OC-12 IQ interfaces	63 for OC-3 and OC-12 channels, 255 for T3 channels
Channelized DS-3 IQ interfaces	63 for T3 channels
Channelized STM-1 IQ interfaces	63 for STM-1 channels
Channelized E1 IQ interfaces	63 for E1 channels

You can associate up to 4 forwarding classes per physical interface. You can configure logical interface scheduling on up to 16 physical interfaces per channelized IQ PIC. Keep in mind that you can configure either a physical interface scheduler or a logical interface scheduler, but not both types of scheduler on the same interface simultaneously.

If you use a Gigabit Ethernet IQ interface, you can apply schedulers on up to 768 VLANs per PIC. For more information on class of service for VLANs on a Gigabit Ethernet IQ interface, see the JUNOS Internet Software Network Interfaces and Class of Service Configuration Guide.